What does the SQL # symbol mean and how is it used?

Question

Can someone please explain to me what the # symbol means in MS SQL Code.

I\'ve tried Googling it, and even searching on StackOverflow,

Answer 1

The pound sign # is used to prefix temporary tables and procedures. A single instance (#) refers to a temporary object that lives/dies with the current session while a double instance (##) is a global object.